Home / 120,850.20-181,056.60-74,048.40

Finding the Fourth Proportional to 120,850.20, 181,056.60 and 74,048.40

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Solution

The fourth proportional to 120,850.20, 181,056.60 and 74,048.40 is: 110,938.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,850.20 : 181,056.60 = 74,048.40 : x
  2. Step 2: Convert to fraction form
    120,850.20/181,056.60 = 74,048.40/x
  3. Step 3: Cross multiply
    120,850.20x = 181,056.60 × 74,048.40
  4. Step 4: Simplify right side
    120,850.20x = 13,406,951,539.44
  5. Step 5: Solve for x
    x = 13,406,951,539.44/120,850.20
  6. Step 6: Final answer
    x = 110,938.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.